Polarizer and polarizing plate including same
US-2017003426-A1 · Jan 5, 2017 · US
Polarizer, polarizing plate, and image display apparatus
US2016238770A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016238770-A1 |
| Application number | US-201615042599-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 12, 2016 |
| Priority date | Feb 16, 2015 |
| Publication date | Aug 18, 2016 |
| Grant date | — |
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- Title
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Abstract
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A polarizer according to an embodiment of the present invention includes a resin film having a thickness of 13 μm or less and containing iodine. The resin film has formed therein a low-concentration portion having a content of the iodine lower than that of another portion.
First claim
Opening claim text (preview).
What is claimed is: 1 . A polarizer, comprising a resin film having a thickness of 13 μm or less and containing iodine, wherein the resin film has formed therein a low-concentration portion having a content of the iodine lower than that of another portion. 2 . The polarizer according to claim 1 , wherein the polarizer has a single axis transmittance of 42.0% or more and a polarization degree of 99.95% or more in the another portion. 3 . The polarizer according to claim 1 , wherein the low-concentration portion has a transmittance of 50% or more. 4 . The polarizer according to claim 1 , wherein the content of the iodine in the low-concentration portion is 1.0 wt % or less. 5 . The polarizer according to claim 1 , wherein the low-concentration portion has a substantially circular shape having a diameter of 10 mm or less. 6 . The polarizer according to claim 1 , wherein the thickness of the resin film is 8 μm or less. 7 . The polarizer according to claim 1 , wherein the low-concentration portion corresponds to a camera hole portion of an image display apparatus on which the polarizer is mounted. 8 . The polarizer according to claim 1 , wherein the low-concentration portion is formed by bringing a basic solution into contact with the resin film containing the iodine. 9 . The polarizer according to claim 8 , wherein the basic solution comprises an aqueous solution of sodium hydroxide having a concentration of 1 wt. % or more. 10 . A polarizing plate, comprising the polarizer of claim 1 . 11 . An image display apparatus, comprising the polarizing plate of claim 10 . 12 . A method of producing the polarizer of claim 1 , the method comprising bringing a basic solution into contact with a resin film having a thickness of 13 μm or less and containing iodine. 13 . The production method according to claim 12 , wherein the basic solution has a temperature of 20° C. or more. 14 . The production method according to claim 12 , further comprising bringing an acidic solution into contact with a portion of the resin film with which the basic solution has been brought into contact. 15 . The production method according to claim 12 , wherein the resin film comprises a resin layer formed on a substrate. 16 . The production method according to claim 15 , wherein the resin layer comprises an applied layer.
Assignees
Inventors
Classifications
- G02B5/3033Primary
in the form of a thin sheet or foil, e.g. Polaroid · CPC title
- G02B5/305Primary
including organic materials, e.g. polymeric layers · CPC title
Filters employing polarising elements, e.g. Lyot or Solc filters (G02B5/3016 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US2016238770A1 cover?
- A polarizer according to an embodiment of the present invention includes a resin film having a thickness of 13 μm or less and containing iodine. The resin film has formed therein a low-concentration portion having a content of the iodine lower than that of another portion.
- Who is the assignee on this patent?
- Nitto Denko Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B5/3033. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Aug 18 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).